ATF volute-free centrifugal fan is a self-developed choingsh pumeprtfioornm,aenncvei, hronimgeh entafl pficrioetneccyt,iloon aw nnod eisen, lergoy sw eanveirnggyfan. This series of fan has the characteristics of high strength, high efficiency, low energy consumption,low onpoeirsaet,iloin aght wnd eeiagshy it,lnasrtgae allaitr viono. Widely used in hotels, hotels,shopping malls,movie theaters,office buildings,basements,hospitals,laboratories,central air conditioning,engineering refrigeration and other ventilation places.